Tiantai
Tiantai or T'ien-t'ai (Chinese: 天台; pinyin: PRC Standard Mandarin:Tiāntāi) is an East Asian Buddhist school of Mahāyāna Buddhism that developed in 6th-century China. Drawing from earlier Mahāyāna sources such as Madhyamaka, founded by Nāgārjuna, who is traditionally regarded as the first patriarch of the school, Tiantai Buddhism emphasizes the "One Vehicle" (Ekayāna) doctrine derived from the influential Lotus Sūtra, as well as the philosophy of its fourth patriarch, Zhiyi (538–597 CE), the principal founder of the tradition.